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(ModeL) J. P. BAUMGARTNER. REVERSIBLE LATCH. No. 248,551. Patented Oct.18,1881.

'l VJTNESSES: [N V EN T OR,

ATTOI'e/VE IQX UNITED STATES PATENT OFFI E.

JOSEPH P. BAUMGARTNER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TOHIMSELF AND DAVID A. CRAIG, OF SAME PLACE.

REVERSIBLE LATCH.

SPECIFICATION forming part of Letters Patent No. 248,551, dated October18, 1881.

Application filed July 29,1881. tModel.)

To all whom it may concern Be it known that I, J OSEPH P. BAUMGART- NEE,a citizen of the United States, residing at Philadelphia, in the countyof Philadelphia and State of Pennsylvania, have invented certain new anduseful Improvements in Knob- Locks; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,reference being had to the accom- IO panyingdrawings,which formpartofthisspecification, in which- Figure l is a side elevation of alock-case, partly in section, having my improvements applied thereto. lig. 2 is a like view, showing the lock-bolt withdrawn into the case; and

Figs. 3 and 4 are perspective details.

Myinvention hasrelation toknob-locks, both rim and mortise, and has forits object to produce a cheap, simply constructed, and easily 2ooperated lock of this class having a reversible knob-bolt.

My invention consists in the special and peculiar construction of thereversible knob-bolt, as hereinafter fully described and claimed, and

in the combination,with theknob-bolt, of a onearmed follower andtwo-armed-lever of novel construction, as hereinafter fully set forth.

Referring to the accompanying drawings, A shows the lock-case, and B theknolo-bolt,which o latter is adapted to slide in and out between studs aa, arising from one side of the case A. Said bolt has at its inner endtwo lugs, b b, one on either side, and near its opposite end two otherside lugs, 11 b At points between these 5 lugs, which project from theedges ofthe bolt, are two other projections, b If, on the broad sides ofsaid bolt.

0 is the follower, which has a single arm, 0, which comes in contactwith one of the lugs b b.

D is a lever, having two arms, at d, which has its fulcrum on acase-boss, a. The arm 01 impinges against one of the projections b bwhile the other arm, cl, is in contact with the arm 0 of the follower O.The contiguous-sides of the arm 0 of the follower O, and of the arm 5 dof lever D, are rounded, as are the arm 61 and lugs b If, so that whenmoving upon or against each other a rolling action takes place, therebyreducing friction and rendering the look easy in action.

E is a retracting-spring, fastened at one end in the case A, as shown atc 0, its other end connecting with or hearing against one of the lugs b11 Bymcansoftheforegoing-descrlbed construc- 5 tion theknob-boltB willbe withdrawn or moved back within the lock, whether the knob be turnedeither to the right or to the left. If turned to the left,the followerarm cis pressed against the lug b and forces back the bolt directly. Ifturned to the right, said arm 0 moves against the arm (1 of the lever D,andthus causes the other arm, d, of said lever to slide the bolt back bypushing on the projection 11 In both cases the retracting-spring throwsthe 6 bolt forward afterit has been moved backward.

To reverse the bolt so as to get its beveled side toward either side ofthe case, said bolt is merely turned overin the case. The lugs b b ifbeing duplicates of thelugs b b If, the lat- 7o ter occupy the placesand perform the functions that the former did with reference to thefollower-arm, lever-arm, and spring.

WVhat I claim as my invention is as follows:

The combination, with case A, of knob-bolt 5 B, having end lugs, b I),and studs 1) b on opposite sides, follower 0, having rounded arm 0, andlever D, with rounded arms (1 61, substantially as shown and described.

In testimony that I claim the foregoing 1 have hereunto set my hand this28th day of July, 1881.

JOSEPH P. BAUMGARTNER.

Witnesses:

E. D. MGLOUGHLIN, M. D. OoNNoLLY.

